Structures are used to mount Solar Module at appropriate angles on the roof and to provide the necessary strength to the complete installations through the life of the solar PV plant.
This installation type usually involves metal and concrete structures to fix the solar panels on and above the roof using a minimum clearance from the ground and the desired inclination.
In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid.
On average, an area of 100 sq feet is required for installing a 1 KW solar system.
In a ground mounted system the space where the panels are installed gets locked and can't be utilized for any other activity. Whereas, in the rooftop system the panels are erected above the roof and hence the question of space availability or being getting locked doesn't appears.
As compared to rooftop systems, the ground mounted systems are more expensive.
The benefits of solar rooftop systems are as follows:
The life expectancy of a solar rooftop system is 25 years.
A 1 KW solar plant can generate around 3 to 5 units of power per day.
Grid-tied systems store energy in the power grid. The solar panels harvest and turn sunlight to DC (direct current). The inverter turns DC (direct current) into alternating current (AC). During the day, solar power will run through a switchboard, thus powering appliances.
Yes, we can take the electricity from the grid at the night time.